Princeton's WordNet
unfortunately, unluckily, regrettably, alasadverb
by bad luck
Synonyms:
regrettably, unluckily, unfortunately, alasAntonyms:
fortunately, as luck would have it, fortuitously, luckily
Wiktionary
unluckilyadverb
Synonyms:
unfortunatelyAntonyms:
luckily, fortunatelyunluckilyadverb
Without luck; unfortunatelySynonyms:
unfortunatelyAntonyms:
luckily, fortunately
Dictionary of English Synonymes
unluckilyadjective
Synonyms:
unfortunately, as ill luck would have it, in an evil hour
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